{"title":"考虑到强飞秒激光脉冲传播过程中波矢量解谐变化的气体谐波产生中的相位同步问题","authors":"K. V. Lvov, S. Yu. Stremoukhov","doi":"10.3103/S1068335624601481","DOIUrl":null,"url":null,"abstract":"<p>An alternative approach to determining the conditions of phase synchronism in the generation of harmonics in gases is proposed to take into account changes in the wave vector detuning during the propagation of an intense femtosecond laser pulse. Based on a numerical study of the third-harmonic generation by an argon medium, laws of scaling laser radiation absorption in the medium and of the phase modulation of spectral field components, which link macroparameters of interaction (pressure, intensity, and degree of medium ionization), have been identified. The possibility was investigated of increasing the third harmonic signal by increasing the gas jet pressure while keeping absorption at a low level.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"51 5 supplement","pages":"S408 - S415"},"PeriodicalIF":0.6000,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Phase Synchronism in the Generation of Harmonics in Gas Taking into Account Changes in the Wave Vector Detuning during the Propagation of an Intense Femtosecond Laser Pulse\",\"authors\":\"K. V. Lvov, S. Yu. Stremoukhov\",\"doi\":\"10.3103/S1068335624601481\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>An alternative approach to determining the conditions of phase synchronism in the generation of harmonics in gases is proposed to take into account changes in the wave vector detuning during the propagation of an intense femtosecond laser pulse. Based on a numerical study of the third-harmonic generation by an argon medium, laws of scaling laser radiation absorption in the medium and of the phase modulation of spectral field components, which link macroparameters of interaction (pressure, intensity, and degree of medium ionization), have been identified. The possibility was investigated of increasing the third harmonic signal by increasing the gas jet pressure while keeping absorption at a low level.</p>\",\"PeriodicalId\":503,\"journal\":{\"name\":\"Bulletin of the Lebedev Physics Institute\",\"volume\":\"51 5 supplement\",\"pages\":\"S408 - S415\"},\"PeriodicalIF\":0.6000,\"publicationDate\":\"2024-10-18\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Bulletin of the Lebedev Physics Institute\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://link.springer.com/article/10.3103/S1068335624601481\",\"RegionNum\":4,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"PHYSICS, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bulletin of the Lebedev Physics Institute","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.3103/S1068335624601481","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"PHYSICS, MULTIDISCIPLINARY","Score":null,"Total":0}
Phase Synchronism in the Generation of Harmonics in Gas Taking into Account Changes in the Wave Vector Detuning during the Propagation of an Intense Femtosecond Laser Pulse
An alternative approach to determining the conditions of phase synchronism in the generation of harmonics in gases is proposed to take into account changes in the wave vector detuning during the propagation of an intense femtosecond laser pulse. Based on a numerical study of the third-harmonic generation by an argon medium, laws of scaling laser radiation absorption in the medium and of the phase modulation of spectral field components, which link macroparameters of interaction (pressure, intensity, and degree of medium ionization), have been identified. The possibility was investigated of increasing the third harmonic signal by increasing the gas jet pressure while keeping absorption at a low level.
期刊介绍:
Bulletin of the Lebedev Physics Institute is an international peer reviewed journal that publishes results of new original experimental and theoretical studies on all topics of physics: theoretical physics; atomic and molecular physics; nuclear physics; optics; lasers; condensed matter; physics of solids; biophysics, and others.